int128_t         4468 bignum.c       rb_int128t2big(int128_t n)
int128_t           87 ext/rbconfig/sizeof/sizes.c     DEFINE(int128_t, INT128_T);
int128_t          333 internal.h     # define DLONG int128_t
int128_t          335 internal.h     VALUE rb_int128t2big(int128_t n);